/*
 * PUBLIC_SURFACE composition only.
 * Shared palette/foundation authority is vendored from PLATFORM.
 * No raw brand colour values belong in this file.
 */

@media (prefers-color-scheme: dark) {
  :root:not([data-daube-mode]) {
    color-scheme: dark;
    --ds-canvas: var(--ds-primitive-trong-canvas);
    --ds-surface-primary: var(--ds-primitive-trong-surface);
    --ds-surface-elevated: var(--ds-primitive-trong-surface-raised);
    --ds-text-primary: var(--ds-primitive-trong-text);
    --ds-text-secondary: var(--ds-primitive-trong-text-muted);
    --ds-border-subtle: var(--ds-primitive-trong-line);
    --ds-accent: var(--ds-primitive-trong-bronze);
    --ds-accent-soft: var(--ds-primitive-trong-bronze-light);
    --ds-accent-sage: var(--ds-primitive-trong-sage);
    --ds-accent-sky: var(--ds-primitive-trong-sky);
    --ds-status-danger: var(--ds-primitive-trong-danger);
    --ds-status-success: var(--ds-primitive-trong-success);
    --ds-focus: var(--ds-primitive-trong-bronze-light);
    --ds-profile-accent: var(--ds-accent);
    --ds-profile-accent-soft: var(--ds-accent-soft);
    --ds-button-primary-bg: var(--ds-accent);
    --ds-button-primary-text: var(--ds-canvas);
    --ds-card-bg: var(--ds-surface-primary);
    --ds-card-border: var(--ds-border-subtle);
    --ds-nav-bg: var(--ds-canvas);
    --ds-nav-text: var(--ds-text-primary);
    --ds-state-bg: var(--ds-surface-elevated);
    --ds-state-text: var(--ds-text-primary);
  }
}

* { box-sizing: border-box; }

html {
  background: var(--ds-canvas);
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100dvh;
  background:
    radial-gradient(circle at 12% 0%, color-mix(in srgb, var(--ds-accent-soft) 22%, transparent), transparent 34rem),
    radial-gradient(circle at 92% 22%, color-mix(in srgb, var(--ds-accent-sage) 12%, transparent), transparent 30rem),
    linear-gradient(180deg, color-mix(in srgb, var(--ds-surface-primary) 82%, var(--ds-canvas)), var(--ds-canvas));
  color: var(--ds-text-primary);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

a { color: inherit; }

a:focus-visible {
  outline: 2px solid var(--ds-focus);
  outline-offset: 4px;
}

.public-skip {
  position: fixed;
  z-index: 100;
  inset-block-start: var(--ds-space-6);
  inset-inline-start: var(--ds-space-6);
  transform: translateY(-180%);
  padding: var(--ds-space-4) var(--ds-space-6);
  border-radius: var(--ds-radius-pill);
  background: var(--ds-text-primary);
  color: var(--ds-canvas);
  text-decoration: none;
}

.public-skip:focus { transform: none; }

.public-shell {
  width: min(100%, var(--ds-content-max));
  margin-inline: auto;
  padding-inline: var(--ds-space-page-inline);
}

.public-header {
  min-height: 78px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--ds-space-8);
  border-bottom: 1px solid var(--ds-border-subtle);
}

.public-brand {
  display: flex;
  flex-direction: column;
  gap: var(--ds-space-1);
  text-decoration: none;
  letter-spacing: 0.08em;
}

.public-brand strong {
  font-family: Georgia, "Times New Roman", serif;
  font-weight: 500;
}

.public-brand span,
.public-channel,
.public-kicker,
.public-card__index,
.public-provenance {
  font-size: 0.68rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.public-brand span,
.public-channel,
.public-provenance { color: var(--ds-text-secondary); }

.public-main { padding-block: clamp(var(--ds-space-12), 10vw, var(--ds-space-15)); }

.public-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(260px, 0.65fr);
  gap: clamp(var(--ds-space-9), 7vw, var(--ds-space-15));
  align-items: end;
}

.public-kicker {
  margin: 0 0 var(--ds-space-6);
  color: var(--ds-accent);
  font-weight: 760;
}

.public-title {
  max-width: 12ch;
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(3.25rem, 8.2vw, 7.5rem);
  font-weight: 400;
  line-height: 0.9;
  letter-spacing: -0.055em;
  text-wrap: balance;
}

.public-lede {
  max-width: 62ch;
  margin: var(--ds-space-8) 0 0;
  color: var(--ds-text-secondary);
  font-size: clamp(1rem, 1.7vw, 1.2rem);
  line-height: 1.72;
}

.public-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--ds-space-4);
  margin-top: var(--ds-space-8);
}

.public-actions .ds-action,
.public-mail-row .ds-action {
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--ds-space-8);
  text-decoration: none;
  font-size: 0.84rem;
  font-weight: 680;
}

.public-mark {
  position: relative;
  min-height: 360px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  isolation: isolate;
  padding: var(--ds-space-8);
  border: 1px solid var(--ds-border-subtle);
  border-radius: var(--ds-radius-xl) var(--ds-radius-xl) var(--ds-radius-md) var(--ds-radius-md);
  background:
    radial-gradient(circle at 50% 22%, color-mix(in srgb, var(--ds-accent-soft) 62%, transparent) 0 10%, transparent 29%),
    radial-gradient(circle at 50% 58%, color-mix(in srgb, var(--ds-accent) 24%, transparent), transparent 50%),
    linear-gradient(180deg, color-mix(in srgb, var(--ds-surface-elevated) 88%, var(--ds-accent-soft)), color-mix(in srgb, var(--ds-accent) 48%, var(--ds-surface-primary)));
  box-shadow: 0 28px 80px color-mix(in srgb, var(--ds-text-primary) 10%, transparent);
}

.public-mark::before {
  content: "";
  position: absolute;
  z-index: -2;
  inset: 8% 13% 18%;
  border: 1px solid color-mix(in srgb, var(--ds-text-primary) 28%, transparent);
  border-radius: 50% 50% 16% 16%;
  box-shadow:
    inset 0 0 48px color-mix(in srgb, var(--ds-accent-soft) 16%, transparent),
    0 0 52px color-mix(in srgb, var(--ds-accent) 12%, transparent);
}

.public-mark::after {
  content: "";
  position: absolute;
  z-index: -3;
  width: 54%;
  aspect-ratio: 1;
  inset: 11% auto auto 23%;
  border-radius: 50%;
  background: color-mix(in srgb, var(--ds-accent-soft) 20%, transparent);
  filter: blur(22px);
  animation: public-breathe 6s ease-in-out infinite;
}

.public-mark__scene {
  position: absolute;
  z-index: -1;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}

.public-mark__halo {
  position: absolute;
  inset: 50% auto auto 50%;
  border: 1px solid color-mix(in srgb, var(--ds-accent-soft) 42%, transparent);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transform-origin: center;
}

.public-mark__halo--outer {
  width: 74%;
  aspect-ratio: 1;
  opacity: 0.32;
  animation: public-orbit 20s linear infinite;
}

.public-mark__halo--middle {
  width: 55%;
  aspect-ratio: 1;
  opacity: 0.5;
  border-style: dashed;
  animation: public-orbit-reverse 14s linear infinite;
}

.public-mark__halo--inner {
  width: 34%;
  aspect-ratio: 1;
  opacity: 0.72;
  box-shadow: 0 0 30px color-mix(in srgb, var(--ds-accent-soft) 22%, transparent);
  animation: public-pulse 5.5s ease-in-out infinite;
}

.public-mark__horizon {
  position: absolute;
  inset: 57% 10% auto;
  height: 1px;
  background: linear-gradient(90deg, transparent, color-mix(in srgb, var(--ds-accent-soft) 58%, transparent), transparent);
  box-shadow: 0 0 20px color-mix(in srgb, var(--ds-accent-soft) 30%, transparent);
  animation: public-horizon 7s ease-in-out infinite;
}

.public-mark__spark {
  position: absolute;
  width: 4px;
  aspect-ratio: 1;
  border-radius: 50%;
  background: var(--ds-accent-soft);
  box-shadow: 0 0 14px color-mix(in srgb, var(--ds-accent-soft) 65%, transparent);
  animation: public-drift 6s ease-in-out infinite;
}

.public-mark__spark--one { inset: 26% auto auto 22%; animation-delay: -1.5s; }
.public-mark__spark--two { inset: 38% 20% auto auto; animation-delay: -3.7s; }
.public-mark__spark--three { inset: auto auto 34% 31%; animation-delay: -4.9s; }

.public-mark small,
.public-mark strong {
  position: relative;
  z-index: 1;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.public-mark small {
  color: var(--ds-text-secondary);
  font-size: 0.64rem;
}

.public-mark strong {
  margin-top: var(--ds-space-2);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.3rem;
  font-weight: 500;
}

.public-contract {
  margin-top: clamp(var(--ds-space-12), 9vw, var(--ds-space-15));
  border: 1px solid var(--ds-border-subtle);
  border-radius: var(--ds-radius-lg);
  background: color-mix(in srgb, var(--ds-surface-primary) 78%, transparent);
  overflow: hidden;
}

.public-contract__head {
  padding: clamp(var(--ds-space-7), 3vw, var(--ds-space-9));
  border-bottom: 1px solid var(--ds-border-subtle);
}

.public-contract__head p {
  margin: 0 0 var(--ds-space-4);
  color: var(--ds-accent);
  font-size: 0.68rem;
  font-weight: 760;
  letter-spacing: 0.17em;
  text-transform: uppercase;
}

.public-contract__head h2 {
  margin: 0;
  max-width: 18ch;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(1.9rem, 4vw, 3.25rem);
  font-weight: 400;
  line-height: 1.02;
  text-wrap: balance;
}

.public-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.public-card {
  min-height: 250px;
  padding: clamp(var(--ds-space-7), 3vw, var(--ds-space-9));
  border-inline-end: 1px solid var(--ds-border-subtle);
  border-bottom: 1px solid var(--ds-border-subtle);
}

.public-card:nth-child(2n) { border-inline-end: 0; }
.public-card:nth-last-child(-n + 2) { border-bottom: 0; }

.public-card__index { color: var(--ds-accent); }

.public-card h3 {
  max-width: 18ch;
  margin: var(--ds-space-11) 0 var(--ds-space-4);
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(1.45rem, 2.8vw, 2.05rem);
  font-weight: 400;
  line-height: 1.06;
  text-wrap: balance;
}

.public-card p {
  max-width: 56ch;
  margin: 0;
  color: var(--ds-text-secondary);
  font-size: 0.9rem;
  line-height: 1.65;
}

.public-contract--mail {
  background: color-mix(in srgb, var(--ds-surface-elevated) 86%, var(--ds-canvas));
}

.public-mail-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: clamp(var(--ds-space-7), 5vw, var(--ds-space-12));
  align-items: end;
  padding: clamp(var(--ds-space-7), 3vw, var(--ds-space-9));
}

.public-mail-row p {
  max-width: 66ch;
  margin: 0;
  color: var(--ds-text-secondary);
  font-size: 1rem;
  line-height: 1.75;
}

.public-provenance {
  margin-top: var(--ds-space-8);
  padding: var(--ds-space-5) 0;
  border-top: 1px solid var(--ds-border-subtle);
  line-height: 1.6;
}

.public-footer {
  display: flex;
  justify-content: space-between;
  gap: var(--ds-space-8);
  padding-block: var(--ds-space-7) var(--ds-space-9);
  border-top: 1px solid var(--ds-border-subtle);
  color: var(--ds-text-secondary);
  font-size: 0.74rem;
}

.public-footer a { text-decoration: none; }

@keyframes public-orbit {
  from { transform: translate(-50%, -50%) rotate(0deg) scaleX(1); }
  50% { transform: translate(-50%, -50%) rotate(180deg) scaleX(0.92); }
  to { transform: translate(-50%, -50%) rotate(360deg) scaleX(1); }
}

@keyframes public-orbit-reverse {
  from { transform: translate(-50%, -50%) rotate(360deg) scaleY(0.9); }
  50% { transform: translate(-50%, -50%) rotate(180deg) scaleY(1); }
  to { transform: translate(-50%, -50%) rotate(0deg) scaleY(0.9); }
}

@keyframes public-pulse {
  0%, 100% { transform: translate(-50%, -50%) scale(0.96); opacity: 0.55; }
  50% { transform: translate(-50%, -50%) scale(1.08); opacity: 0.82; }
}

@keyframes public-breathe {
  0%, 100% { transform: scale(0.94); opacity: 0.55; }
  50% { transform: scale(1.08); opacity: 0.9; }
}

@keyframes public-horizon {
  0%, 100% { transform: scaleX(0.78); opacity: 0.38; }
  50% { transform: scaleX(1); opacity: 0.85; }
}

@keyframes public-drift {
  0%, 100% { transform: translate3d(0, 0, 0) scale(0.8); opacity: 0.35; }
  50% { transform: translate3d(0, -18px, 0) scale(1.15); opacity: 0.95; }
}

@media (hover: hover) and (pointer: fine) {
  .public-card,
  .public-mark,
  .ds-action { transition: transform 180ms ease, border-color 180ms ease, background-color 180ms ease; }
  .public-card:hover { background: color-mix(in srgb, var(--ds-surface-elevated) 88%, transparent); }
  .public-mark:hover { transform: translateY(-3px) scale(1.006); }
  .public-mark:hover .public-mark__halo--outer { animation-duration: 12s; }
  .public-mark:hover .public-mark__halo--middle { animation-duration: 9s; }
  .ds-action:hover { transform: translateY(-1px); }
}

@media (max-width: 760px) {
  .public-header {
    min-height: 68px;
    align-items: flex-start;
    flex-direction: column;
    justify-content: center;
    gap: var(--ds-space-2);
  }

  .public-hero,
  .public-grid,
  .public-mail-row { grid-template-columns: 1fr; }

  .public-title { font-size: clamp(3.1rem, 16vw, 5.8rem); }
  .public-mark { min-height: 280px; }
  .public-mark__halo--outer { width: 62%; }
  .public-mark__halo--middle { width: 47%; }
  .public-mark__halo--inner { width: 31%; }

  .public-card {
    min-height: 0;
    border-inline-end: 0;
    border-bottom: 1px solid var(--ds-border-subtle);
  }

  .public-card:nth-last-child(2) { border-bottom: 1px solid var(--ds-border-subtle); }
  .public-card:last-child { border-bottom: 0; }

  .public-actions { display: grid; }
  .public-actions .ds-action,
  .public-mail-row .ds-action { min-height: 50px; width: 100%; }
  .public-footer { flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,
  *::before,
  *::after {
    animation-duration: 1ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 1ms !important;
  }
}

@media (forced-colors: active) {
  .public-mark,
  .public-contract {
    border: 1px solid CanvasText;
    background: Canvas;
    color: CanvasText;
  }

  .public-mark__scene { display: none; }
}